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我国电力系统常用的中性点接地方式
我国电力系统常用的中性点接地方式有：中性点直接接地、中性点不接地、中性点经消弧线圈接地（谐振接地）、中性点经电阻接地这四种方式。电力系统接地运行方式涉及电网的安全运行、供电可靠性、用户用电安全等诸多重要问题。在专业技术方面涉及电力系统、过电压与绝缘配合、继电保护、通信与自控、电磁兼容、接地设计等诸多领域，是一个内容广泛的系统问题。
There are four kinds of neutral grounding methods commonly used in China's power system: neutral direct grounding, neutral non-grounding, neutral grounding via arc suppression coil (resonant grounding), neutral grounding via resistance. The grounding operation mode of power system involves many important problems, such as the safe operation of power grid, the reliability of power supply and the safety of users'electricity consumption. In the field of professional technology, it involves many fields, such as power system, overvoltage and insulation coordination, relay protection, communication and control, electromagnetic compatibility, grounding design and so on.
其中，中性点经电阻接地就是在电网中性点与地之间串联接入某一电阻器。适当选择所接电阻器的阻值，不仅可以泄放单相接地电弧后半波的能量，从而减少电弧重燃的可能性，抑制电网过电压的辐值，还可以提高继电保护装置的灵敏度以作用于跳闸，从而有效保护系统正常运行。
Among them, the neutral point grounded by resistance is connected to a resistor in series between the neutral point and the earth. Properly choosing the resistance value of the resistor can not only release the energy of the back half wave of the single-phase grounded arc, thus reducing the possibility of arc reburning, restraining the radial value of the grid overvoltage, but also improve the sensitivity of the relay protection device to act on the trip, thus effectively protecting the normal operation of the system.
在交流电网中，特别是以电缆供电的网络采用电阻接地日益广泛。
In the AC network, especially the cable powered network, the resistance grounding is becoming wider and wider.
变压器中性点接地电阻柜是包括接地变压器在内的成套接地设备，可安装于发电厂厂用电系统、变电所供电系统、工矿企业配电系统中，实现这些电网采用中性点经电阻接地的系统运行方式。
Transformer neutral grounding resistance cabinet is a set of grounding equipment including grounding transformer. It can be installed in power plant auxiliary power supply system, substation power supply system, industrial and mining enterprise distribution system to realize the system operation mode of neutral grounding through resistance.
There are four kinds of neutral grounding methods commonly used in China's power system: neutral direct grounding, neutral non-grounding, neutral grounding via arc suppression coil (resonant grounding), neutral grounding via resistance. The grounding operation mode of power system involves many important problems, such as the safe operation of power grid, the reliability of power supply and the safety of users'electricity consumption. In the field of professional technology, it involves many fields, such as power system, overvoltage and insulation coordination, relay protection, communication and control, electromagnetic compatibility, grounding design and so on.
其中，中性点经电阻接地就是在电网中性点与地之间串联接入某一电阻器。适当选择所接电阻器的阻值，不仅可以泄放单相接地电弧后半波的能量，从而减少电弧重燃的可能性，抑制电网过电压的辐值，还可以提高继电保护装置的灵敏度以作用于跳闸，从而有效保护系统正常运行。
Among them, the neutral point grounded by resistance is connected to a resistor in series between the neutral point and the earth. Properly choosing the resistance value of the resistor can not only release the energy of the back half wave of the single-phase grounded arc, thus reducing the possibility of arc reburning, restraining the radial value of the grid overvoltage, but also improve the sensitivity of the relay protection device to act on the trip, thus effectively protecting the normal operation of the system.
在交流电网中，特别是以电缆供电的网络采用电阻接地日益广泛。
In the AC network, especially the cable powered network, the resistance grounding is becoming wider and wider.
变压器中性点接地电阻柜是包括接地变压器在内的成套接地设备，可安装于发电厂厂用电系统、变电所供电系统、工矿企业配电系统中，实现这些电网采用中性点经电阻接地的系统运行方式。
Transformer neutral grounding resistance cabinet is a set of grounding equipment including grounding transformer. It can be installed in power plant auxiliary power supply system, substation power supply system, industrial and mining enterprise distribution system to realize the system operation mode of neutral grounding through resistance.
